Home / 830,890.40-1,246,335.60-514,320.80

Finding the Fourth Proportional to 830,890.40, 1,246,335.60 and 514,320.80

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Solution

The fourth proportional to 830,890.40, 1,246,335.60 and 514,320.80 is: 771,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,890.40 : 1,246,335.60 = 514,320.80 : x
  2. Step 2: Convert to fraction form
    830,890.40/1,246,335.60 = 514,320.80/x
  3. Step 3: Cross multiply
    830,890.40x = 1,246,335.60 × 514,320.80
  4. Step 4: Simplify right side
    830,890.40x = 641,016,322,860.48
  5. Step 5: Solve for x
    x = 641,016,322,860.48/830,890.40
  6. Step 6: Final answer
    x = 771,481.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.